Haha, that was awesome! I kind of worry about people who try to capture that behavior.

lol, what's the worry?
For me it was a just an annoying challenge he presented to me, he was a VERY obnoxiously grrrry puppy, and it got worse, my family was so annoyed by it I knew I had to do something and that's when I saw a show on Animal planet where they were training a barky dog to stop barking by putting it on queue, then put "stop barking" on another queue. So that's why he does it on queue .